rollup-starter-code-splitting
This repo contains a bare-bones example of how to create an application using Rollup, with code-splitting and dynamic imports.
Getting started
Clone this repository and install its dependencies:
git clone https://github.com/rollup/rollup-starter-code-splitting
cd rollup-starter-code-splitting
npm install
Run npm run build
to create two versions of the app, as defined in rollup.config.js:
public/module
contains native JavaScript modules, for browsers that support thempublic/nomodule
contains SystemJS modules, for legacy browsers
The public/index.html
file contains two sets of <script>
tags, one for each version.
Notice that the seven modules in our src
folder have been optimised into four modules β two for the 'entry points', and two more for code that is shared by multiple entry points or is loaded dynamically. Rollup will automatically create chunks in such a way that no code is duplicated between them.
Because it outputs native JavaScript modules, there is zero bundler overhead when targeting modern browsers.
Building and serving
npm run build
builds the application, along with sourcemap files for debugging.
npm start
launches a server, using serve. Navigate to localhost:5000.
License
MIT.